DateComponentsFormatter returns wrong number of unit count

Question

I've faced issue, when DateComponentsFormatter returns unexpected number of units. Does anyone faced same issue?

import Foundation

let formatter = DateComponentsFormatter()
formatter.unitsStyle = .full;
formatter.maximumUnitCount = 1;

let date = Date(timeIntervalSinceNow: -14.7 * 24 * 60 * 60)
let dateString = formatter.string(from: date, to: Date()) // 2 weeks 1 day

I expect to receive "2 weeks", but have "2 weeks 1 day".

Answer 1

I solved the issue by checking for the comma separator and using it to substring the DateFormatters output, PlayGround example in Swift 3

// Test date
var df = DateFormatter()
df.dateFormat = "dd.MM.yyyy HH:mm:ss"
df.timeZone = TimeZone(secondsFromGMT: 0)
let fromDate = df.date(from: "01.01.2000 00:00:00")
var timeDifference = Date().timeIntervalSince(fromDate!)

// Setup formatter
let formatter = DateComponentsFormatter()
formatter.unitsStyle = .full
formatter.includesApproximationPhrase = false
formatter.zeroFormattingBehavior = .dropAll
formatter.maximumUnitCount = 1
formatter.allowsFractionalUnits = false

// Use the configured formatter to generate the string.
var outputString = formatter.string(from: timeDifference) ?? ""

// Remove 2nd unit if exists
let commaIndex = outputString.characters.index(of: ",") ?? outputString.endIndex
outputString = outputString.substring(to: commaIndex)

// Result
print(outputString)